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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 258 (Hydraulic Brakes) >> Repair Instructions >> Brake Master Cylinder Replacement - With Power Brake Booster and Electronic Brake Control Module (with MJK) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Prepare the electronic brake control module for removal with Service Programming System (SPS) and follow the on-screen instructions.
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  3. Front End Sheet Metal Cross Brace - Remove - Front End Sheet Metal Cross Brace Replacement (Impact Bar Bracket) , or Front End Sheet Metal Cross Brace Replacement (Plenum with Blackwing)
  4. GM5890302Courtesy of GENERAL MOTORS COMPANY

    Using a suitable tool, remove the clutch master cylinder reservoir hose (1) from the master cylinder reservoir.

  5. Install a cap or plug to the exposed hose and clutch master cylinder fittings in order to prevent fluid loss and contamination.
  6. GM5491702Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Brake Fluid Level Sensor - Disconnect

  7. GM5324655Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Brake System Control Module - Disconnect

  8. GM5488446Courtesy of GENERAL MOTORS COMPANY

    Rear Brake Pipe Nut (1) - Remove [2x]

  9. Front Brake Pipe Nut (2) - Remove [2x]
  10. Cap the 4 brake pipe inlets to prevent brake fluid loss and contamination.
  11. Instrument Panel Lower Trim Panel Insulator - Remove - Instrument Panel Lower Trim Panel Insulator Replacement - Left Side
  12. GM5896810Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Nut (1) - Remove [2x]

  13. GM5890828Courtesy of GENERAL MOTORS COMPANY

    Depress the brake pedal retainer (1) locking tabs.

  14. Pull the brake pedal (2) outwards to release it from the brake pedal retainer (1).
  15. Remove and DISCARD the brake pedal retainer (1).
  16. GM5493276Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder (1) - Remove

  17. GM5883039Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir Bolt (2) - Remove

  18. Lift the front of the brake master cylinder reservoir (1) upwards and remove from the brake master cylinder.
  19. GM5883040Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir Grommet (1) - Remove and DISCARD [3x]